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Adaptive downlink multi-carrier resource allocation for real-time multimedia traffic in cellular systems

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2 Author(s)
N. Damji ; Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada ; T. Le-Ngoc

This paper presents adaptive downlink multi-carrier resource allocation strategies based on channel information suitable for real-time multimedia services in mobile cellular systems. Both user quality-of-service (QoS) and system performance in terms of system spectral efficiency are considered in the evaluation and comparison of the proposed schemes. Simulation results show that by employing the time-varying channel responses to arrange and allocate the sub-carriers according their expected signal-to-noise ratio (SNR) quality, the proposed scheme offers a substantial increase in system spectral efficiency in supporting real-time multimedia services of different QoS requirements. Interference avoidance strategies are also introduced to further enhance the performance of voice services in cellular systems.

Published in:

Communications, 2004 IEEE International Conference on  (Volume:7 )

Date of Conference:

20-24 June 2004